Mild, Efficient and Selective Silver Carbonate Mediated O-Alkylation of 4-Hydroxy-2-quinolones: Synthesis of 2,4-Dialkoxyquinolines
作者:Enrique L. Larghi、Ademir Farias Morel、Marcel Manke Selvero
DOI:10.1055/s-2005-918945
日期:——
The reaction of 4-hydroxy-2-quinolones with alkyl iodides, benzyl bromides and allyl bromides in benzene at room temperature, in the presence of Ag 2 CO 3 , afforded 2,4-dialkoxyquinolines in moderate to excellent yields. The process is highly regioselective and constitutes a new and mild one-pot alternative for the preparation of this class of compounds.
4-羟基-2-喹诺酮类与烷基碘、苄基溴和烯丙基溴在室温下在苯中,在Ag 2 CO 3 存在下反应,以中等至极好的收率得到2,4-二烷氧基喹啉。该方法具有高度区域选择性,构成了制备此类化合物的一种新的、温和的单锅替代方法。